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. 2015 May 1;6:370. doi: 10.3389/fmicb.2015.00370

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Copyright © 2015 Stegen, Lin, Fredrickson and Konopka.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Maps of measured environmental features evaluated as predictors of estimates of ecological-process-influences. (A) The vertical thickness of the oxidized portion of the Ringold formation, (B) the horizontal distance from the Columbia River, (C) the elevation at the top of the oxidized Ringold formation, and (D) the elevation at the top of the reduced portion of the Ringold formation. Solid symbols indicate sampling locations and colors indicate interpolations with magnitudes corresponding to scale bars associated with each panel.